Cryogenic mount for mirror and piezoelectric actuator for an optical cavity

Oliveira, A. N.; Moreira, L. S.; Sacramento, R. L.; Kosulic, L.; Brasil, V.B.; Wolff, W.; Cesar, C. L.

doi:10.1063/1.4989404

Cited by 11 publications

(7 citation statements)

References 11 publications

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“…The 243-nm beam is mode-matched to the 1S–2S enhancement cavity and sent along a 7-m-long path with active beam-pointing stabilization between the laser laboratory and the ALPHA-2 apparatus. The enhancement cavity is locked to the laser frequency using a single piezoelectric actuator located behind the output coupler mirror 26 to feedback on an error signal generated via the Pound–Drever–Hall technique 27 . The light transmitted through the cavity is monitored using a photodiode that is located outside the vacuum system.…”

Section: Methodsmentioning

confidence: 99%

Characterization of the 1S–2S transition in antihydrogen

Ahmadi

Alves

Baker

et al. 2018

Nature

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128

110

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In 1928, Dirac published an equation that combined quantum mechanics and special relativity. Negative-energy solutions to this equation, rather than being unphysical as initially thought, represented a class of hitherto unobserved and unimagined particles-antimatter. The existence of particles of antimatter was confirmed with the discovery of the positron (or anti-electron) by Anderson in 1932, but it is still unknown why matter, rather than antimatter, survived after the Big Bang. As a result, experimental studies of antimatter, including tests of fundamental symmetries such as charge-parity and charge-parity-time, and searches for evidence of primordial antimatter, such as antihelium nuclei, have high priority in contemporary physics research. The fundamental role of the hydrogen atom in the evolution of the Universe and in the historical development of our understanding of quantum physics makes its antimatter counterpart-the antihydrogen atom-of particular interest. Current standard-model physics requires that hydrogen and antihydrogen have the same energy levels and spectral lines. The laser-driven 1S-2S transition was recently observed in antihydrogen. Here we characterize one of the hyperfine components of this transition using magnetically trapped atoms of antihydrogen and compare it to model calculations for hydrogen in our apparatus. We find that the shape of the spectral line agrees very well with that expected for hydrogen and that the resonance frequency agrees with that in hydrogen to about 5 kilohertz out of 2.5 × 10 hertz. This is consistent with charge-parity-time invariance at a relative precision of 2 × 10-two orders of magnitude more precise than the previous determination -corresponding to an absolute energy sensitivity of 2 × 10 GeV.

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Section: Methodsmentioning

confidence: 99%

Characterization of the 1S–2S transition in antihydrogen

Ahmadi

Alves

Baker

et al. 2018

Nature

Self Cite

128

110

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“…For most MEMS device applications, such as vibration energy harvesters, micropumps, microcantilever-based mass sensors and micromachined ultrasonic transducers for medical and sonar applications, the (effective) transverse piezoelectric coefficient ( e 31f or d 31f ) of the film is the most important factor to be considered. For specific applications however, such as nanometer-position control systems based on piezoelectric actuators for the control of optical cavities or short wavelength mirrors 3 , a large (effective) longitudinal piezoelectric coefficient ( d 33f ) is required to obtain a large piezoelectric deformation in the PZT thin film capacitors.…”

Section: Introductionmentioning

confidence: 99%

Large piezoelectric strain with ultra-low strain hysteresis in highly c-axis oriented Pb(Zr0.52Ti0.48)O3 films with columnar growth on amorphous glass substrates

Nguyen

Houwman

Rijnders

2017

Sci Rep

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Thin films of PbZr0.52Ti0.48O3 (PZT) with largely detached columnar grains, deposited by pulsed laser deposition (PLD) on amorphous glass substrates covered with Ca2Nb3O10 nanosheets as growth template and using LaNiO3 electrode layers, are shown to exhibit very high unipolar piezoelectric strain and ultra-low strain hysteresis. The observed increase of the piezoelectric coefficient with increasing film thickness is attributed to the reduction of clamping, because of the increasingly less dense columnar microstructure (more separation between the grains) with across the film thickness. A very large piezoelectric coefficient (490 pm/V) and a high piezoelectric strain (~0.9%) are obtained in 4-µm-thick film under an applied electric field of 200 kV/cm, which is several times larger than in usual PZT ceramics. Further very low strain hysteresis (H≈2–4%) is observed in 4 to 5 µm thick films. These belong to the best values demonstrated so far in piezoelectric films. Fatigue testing shows that the piezoelectric properties are stable up to 1010 cycles. The growth of high quality PZT films with very large strain and piezoelectric coefficients, very low hysteresis and with long-term stability on a technologically important substrate as glass is of great significance for the development of practical piezo driven microelectromechanical actuator systems.

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“…actuators can operate. [67] The remote control of cavity mode energy by piezoelectric actuator allows such remote, tunable experiments to operate. In another example, an FP cavity with piezoelectric actuators was integrated within a liquid nitrogen dewar.…”

Section: Tunability Of Cavity Modesmentioning

confidence: 99%

“…An FP cavity with piezoelectric actuators can be integrated into a cryostat. Even at a temperature of 3 K, a cryogenic FP cavity with piezoelectric actuators can operate [67] . The remote control of cavity mode energy by piezoelectric actuator allows such remote, tunable experiments to operate.…”

Section: Smart Fabry–perot Cavities For Vibrational Strong Couplingmentioning

confidence: 99%

Optical Cavity Design and Functionality for Molecular Strong Coupling

Hirai,

Andell Hutchison,

Uji‐i

2023

Chemistry A European J

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Optical cavity/molecule strong coupling offers attractive opportunities to modulate photochemical or photophysical processes. When atoms or molecules are placed in an optical cavity, they can coherently exchange photonic energy with optical cavity vacuum fields, entering the strong coupling interaction regime. Recent work suggests that the thermodynamic and kinetic properties of molecules can be significantly changed by strong coupling, resulting in the emergence of intriguing photochemical and photophysical phenomena. As more and more physico‐chemical systems are studied under strong coupling conditions, optical cavities have also advanced in their sophistication, responsiveness, and (multi)functionality. In this review, we highlight some of these recent developments, particularly focusing on Fabry‐Perot microcavities.

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Cryogenic mount for mirror and piezoelectric actuator for an optical cavity

Cited by 11 publications

References 11 publications

Characterization of the 1S–2S transition in antihydrogen

Characterization of the 1S–2S transition in antihydrogen

Large piezoelectric strain with ultra-low strain hysteresis in highly c-axis oriented Pb(Zr0.52Ti0.48)O3 films with columnar growth on amorphous glass substrates

Optical Cavity Design and Functionality for Molecular Strong Coupling

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